CVE-2014-0011

Multiple heap-based buffer overflows in the ZRLE_DECODE function in common/rfb/zrleDecode.h in TigerVNC before 1.3.1, when NDEBUG is enabled, allow remote VNC servers to cause a denial of service (vncviewer crash) and possibly execute arbitrary code via vectors related to screen image rendering.

Published: 2020-01-02 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-0011 is rated High Risk (70.1/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.49%). EPSS rose +1.99% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2014-0011

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.51% 2.49% +1.99%
2 2026-05-19 0.60% 0.51% -0.09%
3 2026-05-12 — 0.60% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-0011

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2014-0011

OS Trackers for CVE-2014-0011

vendor priority summary link
debian unimportant CVE-2014-0011 unimportant priority: Debian including 1 source packages (tigervnc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2014-0011
gentoo normal CVE-2014-0011: 1 GLSA(s) (201411-03), 1 atom(s) (net-misc/tigervnc); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-0011
redhat medium — https://access.redhat.com/security/cve/CVE-2014-0011
suse critical CVE-2014-0011 severity critical: SUSE including 30 source package names (libXvnc-devel-1.7.0-2.1, libXvnc-devel-1.8.0-11.23, …), 52 product×package rows across 19 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (19 product lines)): Fixed 52. https://www.suse.com/security/cve/CVE-2014-0011/

Affected software / configurations for CVE-2014-0011

Vendor Product Version Raw CPE
tigervnc tigervnc < 1.3.1 cpe:2.3:a:tigervnc:tigervnc:*:*:*:*:*:*:*:*

References for CVE-2014-0011

URL Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1050928 Issue Tracking Patch Third Party Advisory
https://github.com/TigerVNC/tigervnc/releases/tag/v1.3.1 Third Party Advisory
cvelogic Threat Intelligence